[FFmpeg-devel] HDYC BT509 color space?

Roger Pack rogerdpack2 at gmail.com
Mon Jan 28 19:47:57 CET 2013

On 1/28/13, Paul B Mahol <onemda at gmail.com> wrote:
> On 1/28/13, Roger Pack <rogerdpack2 at gmail.com> wrote:
>> Hello, I noticed that in today's ffmpeg,
>>  MKTAG('H', 'D', 'Y', 'C') seems to map to AV_PIX_FMT_UYVY422
>> I had a question...I believe that HDYC uses the BT709 colorspace
>> ("full spectrum"?) which may be non standard, does anybody know if
>> AV_PIX_FMT_UYVY422 works for this case?  Do I need to do anything
>> special to an HDYC stream to mark its colorspace?
>> refs:
>> http://mailman.videolan.org/pipermail/vlc-devel/2008-October/051867.html
>> http://www.fourcc.org/yuv.php#HDYC
> AFAIK one set color_range but BT709 is supposed to be handled by libswscale
> by setting colorspace. So AFAIK nothing set it for this tag in lavc.
> So I guess you need to handle it manually.

Ok so the default is "MPEG intensity" (16-239) not JPEG intensity, so
I should set color_range to AVCOL_RANGE_MPEG when receiving an HDYC
stream from a blackmagic intensity card?

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